LM2674LD-12/NOPB

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The LM2674LD-12/NOPB is a fixed frequency, integrated switching voltage regulator from Texas Instruments that offers excellent efficiency and integrates many functions including an oscillator, error amplifier, reference, power MOSFET and COT control. It is part of the LM2674 family of Voltage Regulators with DC to DC Switching Regulators.

The LM2674LD-12/NOPB is an ideal step-down switching regulator for applications such as powering high-end desktop processors, microprocessors and mobile processors up to 12 A. It is capable of delivering a regulated output voltage in the range of 0.6 V to 40 V with a maximum output current of 12 A. Additionally, it provides protection against short-circuits, overvoltage and current limiting.

The LM2674LD-12/NOPB is designed to operate within a wide input voltage range, spanning from 5 V to 40 V, enabling its use in both high and low voltage systems. Furthermore, the switching frequency can be adjusted from 200 kHz up to 1.25 MHz to suit different needs. That allows for both high-efficiency, low-noise operation and the use of small surface-mount components when needed.

The working principle behind the LM2674LD-12/NOPB is that it uses a pulse-width modulation (PWM) to regulate the output voltage. This is accomplished by comparing the regulated output voltage to the voltage reference and adjusting the duty cycle of the power switch accordingly. The integrated oscillator generates the pulse and sets the switching frequency, while the output voltage is regulated by the error amplifier which receives feedback from the output voltage. This is then used to adjust the duty cycle, thus ensuring proper output voltage is maintained.

The LM2674LD-12/NOPB offers an array of protection features, such as current limiting and overvoltage protection. It is capable of protecting the system against short-circuits and it also provides automatic shutdown when the output voltage goes above the expected safe limit. Additionally, the PMOS switch is protected against over-temperature.

Overall, the LM2674LD-12/NOPB is an excellent choice for power applications that require a step-down switching regulator. It features adjustable switching frequency, wide input voltage range, high efficiency and a wide range of protection features. With its easy to use and programmable design, the LM2674LD-12/NOPB is an ideal solution for many applications requiring efficient power conversion.

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